Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Nonlinear frequency Response Analysis of Hydrodynamic Journal Bearing Under External Disturbance

외란을 받는 저널 베어링의 비선형 주파수 응답 해석

  • 노병후 (한국과학기술원 기계공학과) ;
  • 김경웅 (한국과학기술원 기계공학과)
  • Published : 1999.03.01
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Abstract

This paper presents the nonlinear characteristics of the oil lubricated hydrodynamic journal bearing. The traditional approach is to characterize the behavior and performance of fluid film hydrodynamic journal bearings by means of linearized bearing analysis. The objective of this paper is to examine the nonlinear characteristics of the journal bearing when an external sinusoidal shock is given to the system. The oil film force is obtained by solving the finite width Reynolds equation at each time step by the solution of the column method. Frequency response function and journal orbit obtained from both linear and nonlinear bearing simulations are compared with each other.

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References

  1. ASME J. of Tribology v.109 Review of the Concept of Dynamic Coefficients for Fluid Film Journal Bearings Lund,J.W.
  2. IMechE v.C318 no.88 Anti-earthquake Considerations in Rotordynamics Hori,Y.
  3. STLE Tribology Trans. v.36 Seismic Response of a Linearly Stable, Misaligned Multirotor System Kato,T.;Matsuoka,H.;Hori,Y.
  4. ASME J. of Tribolgy v.114 Nonlinear Transient and Frequency Response Analysis of a Hydrodynamic Journal Bearing Choy,F.K.;Braun,M.J.;Hu,Y.
  5. ASME J. of Tribology v.116 Perturbation Approach to Hydrodynamic Lubrication Theory Myllerup,C.M.;Hamrock,B.J.
  6. ASME J. of Tribology v.118 Transient Analysis of Plain and Tilt Pad Journal Bearings Including Fluid Film Temperature Effects Gadangi,R.K.;Palazzolo,A.B.